S-93691A450 3/8"-16 MS51576-39, NASM51576 Shoulder Screws
Shoulder Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh industrial environments
- Precise alignment and reduced assembly time due to the exact 1/2" shoulder diameter with tight tolerances
- High load-bearing capability supported by 70,000 psi tensile strength and Rockwell B55 hardness
- Reliable thread engagement with Class 2A UNC coarse threads ensuring secure fastening in high-vibration applications
- Easy installation and removal using the standard hex socket drive for efficient maintenance
- Compliance with stringent industry standards including MS51576-39, RoHS 3, and REACH for global supply chain compatibility
- Durable smooth head design that minimizes wear and provides a clean finish in visible assemblies
Professional Applications & Engineering Value
This 3/8"-16 UNC shoulder screw is engineered to address critical alignment and durability challenges in precision industrial applications. The 18-8 stainless steel construction, enhanced by a passivated finish, offers exceptional resistance to corrosion and oxidation, making it suitable for machinery exposed to moisture or chemicals. The precisely machined 1/2" shoulder diameter with minimal tolerances ensures accurate component positioning, reducing misalignment issues in assemblies like rotating shafts, pivots, and guide mechanisms. Combined with a Class 2A thread fit and coarse UNC threads, it provides robust holding power in high-stress environments, from automotive fixtures to packaging equipment. This screw’s hex socket drive allows for straightforward installation in confined spaces, streamlining maintenance while upholding reliability in B2B fastener systems.
Specification Summary & Compliance
This shoulder screw adheres to Class 2A thread fit and UNC coarse thread standards, with precise shoulder diameter and length tolerances (e.g., shoulder diameter: -0.001" to 0"). It meets MS51576-39 specifications and is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for industrial use.
